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What have you programmed so far?
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Can you show some sample input for today's date and birthday date? I'm not sure why you would need three parameters. Also, in addition to the potential messages, how should the display of the age appear (e.g. just number of years or number of years, months, and days) ?
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Can you show some sample input for today's date and birthday date? I'm not sure why you would need three parameters. Also, in addition to the potential messages, how should the display of the age appear (e.g. just number of years or number of years, months, and days) ?

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Input item<br />
・ Today's date (year, date, date)<br />
・ Birthday (year, date, date)<br />
- Output specification<br />
Described below<br />
Calculate the age from the date of birth and display it.<br />
Also, the following message is displayed from today's date of entry.<br />
Message specification<br />
Birthday 1 day before: tomorrow is the birthday.<br />
Birthday day: This day is the birthday. congratulations.<br />
One day after birthday: Last day was a birthday.<br />
Do not display anything except the above.<br />
<br />
The birth date of the person brought up on a leap day is as follows.<br />
When I am a leap year, 2/29 is my birthday<br />
When it is not a leap year, 2/28 is the birthday
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Input item
・ Today's date (year, date, date)
・ Birthday (year, date, date)
- Output specification
Described below
Calculate the age from the date of birth and display it.
Also, the following message is displayed from today's date of entry.
Message specification
Birthday 1 day before: tomorrow is the birthday.
Birthday day: This day is the birthday. congratulations.
One day after birthday: Last day was a birthday.
Do not display anything except the above.

The birth date of the person brought up on a leap day is as follows.
When I am a leap year, 2/29 is my birthday
When it is not a leap year, 2/28 is the birthday

age from the date of birth and the date of today.

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.